//
// DotNetNuke - http://www.dotnetnuke.com
// Copyright (c) 2002-2010
// by Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and 
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions 
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
//

/*=======================================================================
?Copyright (C) Microsoft Corporation.?All rights reserved.
?
  THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
  PARTICULAR PURPOSE.
=======================================================================*/

using System.Collections;
using System.Collections.Generic;
using System.Xml;

namespace DotNetNuke.Services.Syndication 
{
    /// <summary>
    /// Class to consume (or create) a channel in a late-bound way
    /// </summary>

    public sealed class GenericRssChannel : RssChannelBase<GenericRssElement, GenericRssElement> 
    {
        public GenericRssChannel() 
        {
        }

        public new Dictionary<string, string> Attributes 
        {
            get
            { 
                return base.Attributes; 
            }
        }

        public string this[string attributeName] 
        {
            get 
            { 
                return GetAttributeValue(attributeName);
            }
            set 
            { 
                Attributes[attributeName] = value; 
            }
        }

        public GenericRssElement Image 
        {
            get 
            { 
                return GetImage(); 
            }
        }

        public static GenericRssChannel LoadChannel(string url) 
        {
            GenericRssChannel channel = new GenericRssChannel();
            channel.LoadFromUrl(url);
            return channel;
        }

        public static GenericRssChannel LoadChannel(XmlDocument doc) 
        {
            GenericRssChannel channel = new GenericRssChannel();
            channel.LoadFromXml(doc);
            return channel;
        }

        // Select method for programmatic databinding
        public IEnumerable SelectItems() 
        {
            return SelectItems(-1);
        }
         
        public IEnumerable SelectItems(int maxItems) 
        {
            ArrayList data = new ArrayList();

            foreach (GenericRssElement element in Items) 
            {
                if (maxItems > 0 && data.Count >= maxItems) 
                {
                    break;
                }

                data.Add(new RssElementCustomTypeDescriptor(element.Attributes));
            }

            return data;
        }
    }
}
